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Finding the Fourth Proportional to 14,211.81, 19,612.40 and 7,924.59

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Solution

The fourth proportional to 14,211.81, 19,612.40 and 7,924.59 is: 10,935.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,211.81 : 19,612.40 = 7,924.59 : x
  2. Step 2: Convert to fraction form
    14,211.81/19,612.40 = 7,924.59/x
  3. Step 3: Cross multiply
    14,211.81x = 19,612.40 × 7,924.59
  4. Step 4: Simplify right side
    14,211.81x = 155,420,189.29
  5. Step 5: Solve for x
    x = 155,420,189.29/14,211.81
  6. Step 6: Final answer
    x = 10,935.99

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.